Interferometric observations of the 1-0 transition of HCO(+) toward NGC 7538 IRS 1

Details Interferometric observations of the 1-0 transition of HCO(+) toward NGC 7538 IRS 1 Interferometric observations of the 1-0 transition of HCO(+) toward NGC 7538 IRS 1

Jul 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...330l..67b&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 330, July 1, 1988, p. L67-L70. Research supported by the Universi

Astronomy and Astrophysics

Astronomy

8

Formyl Ions, Interferometry, Interstellar Matter, Line Spectra, Molecular Clouds, Radio Sources (Astronomy), H Ii Regions, Star Formation

Scientific paper

Interferometric observations of the molecular cloud toward the compact H II region IRS 1 in NGC 7538 in the 1-0 line of HCO(+) are reported. Employing a resolution of 8.5 arcsec, a highly elongated molecular cloud oriented at position angle 52 deg is found, perpendicular to the axis of the bipolar CO outflow. In perfect alignment with the blueshifted lobe in CO, strong blueshifted line wings are detected in HCO(+). The origin of the flow is at the center of the HCO(+) cloud, 15 arcsec to the south of IRS 1, which is clearly not the source that powers this outflow. So far no other indication of star formation has been detected at this position.

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